PASADENA, California — For the second time ever, a spacecraft has slipped into orbit around huge and mysterious Jupiter. NASA's robotic Juno probe began circling the solar system's largest planet tonight (July 4), ending a nearly five-year journey through deep space and becoming the first spacecraft to enter Jupiter orbit...
Jupiter is famous for its Great Red Spot, a storm twice the diameter of Earth that rages on the gas giant's surface. Now, researchers have found that it has a second great spot, almost as large — this one, a Great Cold Spot caused by the planet's vibrant auroras. Researchers...